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***************************************************************************/
#include "stdafx.h"
#include "DescriptorPool.h"

namespace Falcor
{
    DescriptorPool::SharedPtr DescriptorPool::create(const Desc& desc, const GpuFence::SharedPtr& pFence)
    {
        SharedPtr pThis = SharedPtr(new DescriptorPool(desc, pFence));
        return pThis->apiInit() ? pThis : nullptr;
    }

    DescriptorPool::DescriptorPool(const Desc& desc, const GpuFence::SharedPtr& pFence) : mDesc(desc), mpFence(pFence) {}

    DescriptorPool::~DescriptorPool() = default;

    void DescriptorPool::executeDeferredReleases()
    {
        uint64_t gpuVal = mpFence->getGpuValue();
        while (mpDeferredReleases.size() && mpDeferredReleases.top().fenceValue <= gpuVal)
        {
            mpDeferredReleases.pop();
        }
    }

    void DescriptorPool::releaseAllocation(std::shared_ptr<DescriptorSetApiData> pData)
    {
        DeferredRelease d;
        d.pData = pData;
        d.fenceValue = mpFence->getCpuValue();
        mpDeferredReleases.push(d);
    }
}
